linux-kernel - Re: [PATCH 1/3] ALSA: hda/tegra: Skip reset on BPMP devices

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Date:   Tue, 7 Dec 2021 21:02:14 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Sameer Pujar <spujar@...dia.com>, tiwai@...e.com,
        broonie@...nel.org, lgirdwood@...il.com, thierry.reding@...il.com,
        perex@...ex.cz
Cc:     jonathanh@...dia.com, alsa-devel@...a-project.org,
        devicetree@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Mohan Kumar <mkumard@...dia.com>, robh+dt@...nel.org
Subject: Re: [PATCH 1/3] ALSA: hda/tegra: Skip reset on BPMP devices

07.12.2021 20:37, Sameer Pujar пишет:
..
>> HDA won't be reset while display is active on T186+.
> 
> No. HDA reset is applied whenever power-domain is ungated. It can happen
> when either HDA or display device becomes active.

I said "display is active", where do you see "becomes active"?

> So I don't think that
> it is inconsistent.

If display is already active, then shared power domain is already
ungated. It won't be ungated second time in a row, HDA won't get the reset.